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Another Crumbling Reactor Springs a Tritium Leak

mdsolar writes "The decrepit nuclear reactor Vermont Yankee has sprung a radioactive leak similar to those at other poorly run reactors in Illinois (Braidwood, Byron and Dresden), Arizona (Palo Verde), and New York (Indian Point). Greenpeace noted 3 years ago that radioactive tritium leaks even threaten Champagne from France. Tritium and its decay product helium 3 are incredibly valuable and there is currently a shortage of helium 3. What, besides shutting down leaky old nuclear plants, could be done to better control release of tritium into the environment?"

50 of 466 comments (clear)

  1. A Sticky Situation by HamSammy · · Score: 4, Funny

    http://en.wikipedia.org/wiki/Duct_tape

  2. WTF is up with the summary? by HornWumpus · · Score: 3, Insightful

    Is this the fucking Greenpeace sight?

    Can't we keep the Luddites from being /. editors?

    --
    John McAfee 'It was like that time I hired that Bangkok prostitute; to do my taxes, while I fucked my accountant'
    1. Re:WTF is up with the summary? by biryokumaru · · Score: 3, Funny

      Well, it does make it sound like a "crumbling" old reactor is "springing" a terribly dangerous tritium "leak" when really it's hardly hazardous at all. I mean, just because everything you read about radiation has an extremely negative spin doesn't change the fact that it's all still spin.

      --
      When you're afraid to download music illegally in your own home, then the terrorists have won!
    2. Re:WTF is up with the summary? by eldepeche · · Score: 5, Informative

      The words "crumbling," "decrepit" and "poorly run" are pretty loaded, especially referring to levels of tritium around half the limit found on site, and no detectable levels off site.

    3. Re:WTF is up with the summary? by SpeedyDX · · Score: 4, Insightful

      I don't think Greenpeace supporters are luddites, their views are just lean a little too far over.

      My problem with Greenpeace is in their ridiculous stunts that not only endanger themselves, but others around them. Oh, also that they blatantly misinform the public to push their agenda, but that's par for the course for many political groups.

    4. Re:WTF is up with the summary? by ductonius · · Score: 5, Insightful

      I tried to find any anti-nuclear spin (no pun intended) there, but couldn't find any.

      The fact that your spin-detector can't sense anything from the summary is indicative of greater problems.

      But I digress. Let's begin with the title.

      Another Crumbling Reactor Springs a Tritium Leak

      Of the seven words in that title, three are designed to create a perception of the situation that is far worse than reality.

      "Another": indicating more than one, or the latest in a series, or a connection to a greater ongoing situation. This is a spin word because it gives the impression that tritium leaks are special events that deserve special attention. This is not true. Reactors have been known for a very long time to create tritium and leak it, sometimes deliberately. CANDU reactors release tritium into the surrounding environment as a consequence of their design. They are allowed to do this because such leaks are not dangerous.

      "Crumbling": indicating an advanced state of disrepair and decrepitude, a state of 'going to pieces', extreme unsoundness in structure or the inability to support it's own weight. This is a spin word because only a technical, literal definition of "crumbling" can apply to the reactor in question, the same definition that can be applied to anything, because everything not being created is in a state of entropic decay.

      "Springs": indicating a sudden or forceful event. This is a spin word because it gives a false picture of what is plausibly taking place. Many reactors leak tritium as it diffuses through concrete and steel or in their cooling water. Any sudden or forceful leak of tritium would most likely be accompanied by a sudden and forceful leak of super-heated steam, which obviously hasn't happened.

      Onto the summary.

      "The decrepit nuclear reactor Vermont Yankee has sprung a radioactive leak similar to those at other poorly run reactors in Illinois (Braidwood, Byron and Dresden), Arizona (Palo Verde), and New York (Indian Point).

      "Decrepit", "sprung" and "poorly run" are all loaded words. They make unsupported judgments about the reactor in question. The supposed problem is then also attributed to a number of other reactors the reader may or may not know about. This sentence assumes a problem and is constructed to make it appear to be widespread.

      The use of the words "radioactive leak" is also spin, since anything radioactive escaping from anywhere can be counted. Dropping an ionizing smoke detector on the ground could be described as a "radioactive leak".

      Greenpeace noted 3 years ago that radioactive tritium leaks even threaten Champagne from France.

      This is spin, but it relies on the reader taking Greenpeace to be in a position of authority to make such judgments.

      Tritium and its decay product helium 3 are incredibly valuable and there is currently a shortage of helium 3.

      This is the only non-spin sentence in the summary. It may or may not be factually correct, I don't know, but it's stated as a fact and does not contain any loaded language I can see.

      What, besides shutting down leaky old nuclear plants, could be done to better control release of tritium into the environment?"

      The spin here is the loaded question which implies that the current release of tritium into the environment is a problem worthy of attention and further control.

      So, yeah, there's the anti-nuclear spin. Lots of loaded words, ill-defined terms, misleading wording and an appeal to authority thrown in to boot.

    5. Re:WTF is up with the summary? by ductonius · · Score: 4, Insightful

      radioactive materials are notoriously corrosive

      No they aren't. The earth's atmosphere is notoriously corrosive. Most radioactive materials are just, well, radioactive.

      Is it that little fact that radiation causes cancer? Because that is true you know.

      Sure, but most radiation induced cancers probably come from sunlight and radon gas, not a tritium leak virtually nobody is exposed to in any meaningful dose.

    6. Re:WTF is up with the summary? by jd2112 · · Score: 5, Funny

      What, besides shutting down leaky old nuclear plants, could be done to better control release of tritium into the environment?

      Nothing. For the sake of the environment we should shut down these dirty, poluting nuclear power plants and replace them with clean eco-friendly coal burning plants at once.

      --
      Any insufficiently advanced magic is indistinguishable from technology.
    7. Re:WTF is up with the summary? by TapeCutter · · Score: 4, Interesting

      "Is this the fucking Greenpeace sight?"

      No. As a "greenie" since the 70's I can assure you greenpeace were blinded by ideology a long time ago.

      I think this became pretty obvious when they started campaigning against chlorinated water a couple of decades ago. Despite the fact it has been repeatedly pointed out to them, it seems to have escaped their attention that chlorination was probably the single largest improvement in public health in the 20th century.

      It happens to all political movements, they start off with a real issue and end up handling associated facts with the same respect fox news does. Often the founders end up either quitting in disgust (as is the case with GP) or being pushed out by the spin doctors. Organisations such as GP are also susceptable to having people form "tea parties" and go off doing their own thing under the organisations banner.

      None of this means leaky reactors are not "news for nerds", that's just you sticking your fingers in your ears and singing "la, la, la, la" because you saw the word greenpeace. If TFA that I haven't read is a bullshit press release from GP then by the time it reaches the bottom of the front page there will be a dozen or more highly rated post that debunk it with sound logic, reputable references and a bit of humour.

      BTW: You almost got it right, "Luddite" accurately describes some parts of GP policy but it's doubtfull the editor who posted TFA subscribes to it.

      --
      And did you exchange a walk on part in the war for a lead role in a cage? - Pink Floyd.
    8. Re:WTF is up with the summary? by paeanblack · · Score: 3, Insightful

      Other than the fact that it passingly mentions Greenpeace at all, what do you find wrong with the summary?

      The fact that tritium is one of the worlds most expensive manufactured materials and sells for somewhere on the order of $50,000 / gram

      The fact that tritium is relatively harmless; it is used for glow-in-the-dark effects on watch dials, exit signs, etc, cost permitting.

      Are we to believe that a for-profit company that is already in the business of selling tritium runs a reactor that "sprung" a tritium "leak", and they have no incentive to do anything about it?

    9. Re:WTF is up with the summary? by wizardforce · · Score: 4, Informative

      neutrons aren't corrosive; corrosion is a chemical process. Neutron radiation is a nuclear process. Sodium metal in liquid metasl cooled reactors is corrosive. Water at extremely high temperatures in the reactor is corrosive. Radioactive materials are not in of themselves corrosive unless their chemical properties dictate this to be such.

      --
      Sigs are too short to say anything truly profound so read the above post instead.
    10. Re:WTF is up with the summary? by Lil'wombat · · Score: 4, Funny

      The words "crumbling," "decrepit" and "poorly run" are pretty loaded, especially referring to levels of tritium around half the limit found on site, and no detectable levels off site.

      But in his defense, he did refer to Illinois, and those three words should be the state motto.

      --

      Truth: If it's not one thing, it's another

    11. Re:WTF is up with the summary? by dbIII · · Score: 5, Insightful

      It sums up many industries in general and goes in cycles. When Three Mile Island was designed great care was taken and the containment building was designed to withstand the impact of a fully fueled large aircraft from the nearby airport. By the time of the accident complacency had set in and the control systems were inferior to just about every industrial plant in the USA - it took many days to get a clue as to what was going on. The care taken early on turned it into the best type of accident, nobody died and preventative work was done to avoid accidents in places without the benefit of such good containment. After that things improved dramaticly.
      By the time things got slack again Chenobyl reminded everyone to stop taking stupid shortcuts. Now we've got to a point where it's just written off as dumb Russians and the superior people in the USA can never make mistakes even if they are taking stupid shortcuts - you'll see that attitude very strongly exhibited every time Chenobyl here. Patriotic fervour is not going to save anyone doing stupid stuff from the consequences of their actions - Russian stupidity, American stupidity - it's all stuipid. It's a matter of putting things under competant adult supervision instead of the usual horse judges or waiting for something that will scare the horse judges into action and hope it's a TMI and not a Chenobyl. That is what regulatory agencies are for but if someone is stupid enough to hide things from them for commericial advantage everyone loses.
      New designs small enough that they can never fail as dramaticly as either accident are an option but the old US nuclear lobby is pushing 1970s crap with a coat of green paint. New stuff requires R&D which is something the nuclear lobby hasn't really done in thirty years. South Africa and Australia are way ahead in some areas on tiny as distinct from zero budgets. If the nuclear lobby had actually tried to do more than collect welfare then civilian nuclear power may have actually become a commercial proposition by now.

    12. Re:WTF is up with the summary? by TiberSeptm · · Score: 3, Informative

      Corrosion is the wrong word to use, but you are really just arguing semantics. Radiation can have quite a damaging effect on materials. Radiation interactng with structural materials in a reactor core can cause:

      Ionization of materials- accelerating corrosion on the surface of the material and shifts within it Radio-activation of materials- which decay changing the chemical makeup of the material and therefore the disrupting the microscopic structure and weakening it Helium and production - some modes of decay of irradiated structural materials can produce helium (alpha particle) which displaces other atoms in the material and can produce voids within the material

      In general the effect this has is mostly in the form of "embrittlement" and "swelling" of the material. While this is notably different than corrosion, it does increase the risk of microscopic cracks and fractures occuring in the pressure vessel. It is through these cracks that some leaks may form- though they are usually so small that it is mostly only the lightest elements like hydrogen that can escape in noteworthy quantity. Still, there the threat that this tritium poses is relatively minor even when released into the environment.

      Tritium disperses rapidly in the environment since it diffuses exactly like normal hydrogen gas- this means the direct dose to individual people, plants, and animals in the area will be very low. Consequently, indirect exposure through livestock and produce will be even lower. Ground level exposure is generally exceptionally low compared to that from other potential byproduct releases due to the rapid and high (vertical) diffusion of both tritium gas and T2O. Exposure rates from tritium contamination, even from catastrophic accidents, is low enough to represent little threat to those in the immediate area and indirectly through affected food products and water supplies.

      Even high levels of exposure, though unlikely, are generally not a significant threat. The mode of decay is a low energy beta-particle (electron) which is effectively attenuated by a sheet of paper or a thin layer of dead skin. This type of radiation is not particularly harmful, even when ingested. While very large doses over long periods of time can increase free radicals inside the body through ionization effects, the effect is so marginal that tritium is considered safe for use in exit signs. Even decay inside the body, from contaminated water, is unlikely to pose much of a statistical risk. In fact, a broken exit sign in a small movie theater would expose you to a greater dose than they these leaks from nuclear plants. That does is still low enough that, while caution is advised by manufacturers for the sake of prudence, that it does not amount to much more than your normal background dose. Tritium exposure is also considered to be a low enough risk that it is used in found in some gun sights and in some watches. Ingesting the tritium contents of one of these devices, while still far far greater than exposure from these plants, poses little to no real health risk.

      In the case of the above story, the "well" described was a test well meant to monitor for releases of radioactive materials and not a drinkng water well- it was within the grounds of the power plant. It should be noted that the test well along the river showed no contamination. Now, even if you were to drink the water from this contaminated well for a year the increased exposure you would suffer beyond normal background radiation would be equivalent to about 1/1000th what you would get from a cross country flight in an aircraft. It is also slightly lower than what you would expect if you lived in an area with naturally elevated background radiation- which some studies have shown to actually produce a slight decrease in cancer rates. That might just be a statistical anomaly rather than an inoculative effect.

      Aging power plants, in the US in particular, do pose some serious health and environmental challenges. Tritium leakage is not one of

    13. Re:WTF is up with the summary? by OeLeWaPpErKe · · Score: 4, Informative

      Tritium decay : (3,1)H -> (3,2) He + e- + ve-

      Tritium decays into a low-energy electron and an antineutrino.

      Antineutrino's will start flying at near-light speeds and extremely likely not interact with anything until they hit a neutron star or a black hole. They are not dangerous for living beings, as they simply fly right through them. It carries off the majority of the energy (11-12 KeV)

      The electron has an energy of close to 6 KeV (kilo electron volt). At these speeds electrons are not capable of penetrating human skin, or any layer of fluid. The only way to make tritium dangerous is to drink large amounts of it. The water in it gets built into your cells, and there it is close enough to do some (minor, compared to gamma decay) damage.

      You can, however, shower perfectly safely in tritium. As rain can theoretically contain up to 0.5% tritium (though ten times less is much more likely), most of us will turn out to have actually done just that.

      Conclusion : tritium is not corrosive. It is not dangerous (except as a useful component to make an atomic bomb)

  3. Forget about champagne by santax · · Score: 4, Funny

    is my beer in danger? That's what I would like to know!

  4. Big Deal...? by NalosLayor · · Score: 5, Interesting

    We're talking about *tritium* here, not plutonium. It's just not all that dangerous as far as radioactive materials go. You might well be *WEARING* some right now if you have a watch that glows in the dark. Unless they're releasing hundreds of pounds of it at a time here (they aren't, there's ~165lbs of the stuff in the US right now) , any farm even a kilometer away is not a real health hazard. http://en.wikipedia.org/wiki/Tritium

    1. Re:Big Deal...? by Mr.+Flibble · · Score: 5, Informative

      We're talking about *tritium* here, not plutonium. It's just not all that dangerous as far as radioactive materials go. You might well be *WEARING* some right now if you have a watch that glows in the dark. Unless they're releasing hundreds of pounds of it at a time here (they aren't, there's ~165lbs of the stuff in the US right now) , any farm even a kilometer away is not a real health hazard.

      http://en.wikipedia.org/wiki/Tritium

      Absolutely correct! I am in fact wearing some right now! I have a necklace that has a "beta light" or as it is called in the UK a "Tritium Kit Marker". I carry this as it is part of my survival kit (I spend a good deal of time out doors) and having it in a necklace as a pendant always keeps it with me for emergencies.

      Why do I carry it? Because it will stay glowing for roughly 15 years. The half-life of this gas is 12.3 years, and that is round about enough to keep the pendant glowing for 15 years or so. I can read by it in complete darkness, and almost hike by it in total darkness (as in a cave).

      Now, before people freak out - Tritium is a beta emitter. Barely any electrons make it through the boro-silicate glass or plastic secondary container. Those that do are unlikely to penetrate my first layer of skin.

      In order to do myself some damage with it, I would have to remove it from the plastic casing, crush the glass vial in my teeth, while carefully keeping my mouth closed (as tritium gas is lighter than air) then swallow the lot with some water to make certain it all goes down. Even then, after I pee it out in about 1-2 weeks time, I will have received a dosage roughly equivalent to a chest X-Ray.

      For those of you who are still skeptical, I had the vial tested by some Physicists from Alamogordo at the Trinity Test Site this year, and in Los Alamos with Geiger counters. It registers as radioactive... but then again, so does a banana. I forget how many rems it gives off, but it was not much higher than normal background radiation, and far lower than may other common things such as a smoke detector.

      --
      Try to hack my 31337 firewall!
    2. Re:Big Deal...? by Dun+Malg · · Score: 5, Informative

      YES if your sitting next to a sold block of tritium

      If you're sitting next to a solid block of Tritium, your largest problem is going to be hypothermia, as it'd be -257degC. Tritium is an isotope of hydrogen, a gas at STP.

      Others here have already documented how ingestion of small amounts of Tritium (and the amounts available at the concentration discussed in the article are indeed quite small) is about the equivalent of a chest X-ray, so I will leave the above example of your ignorance of basic physics as proof enough that your opinion is likely based on speculation.

      Also, comparing Tritium to Plutonium is pretty weak sauce as well. They are only alike in that they're both radioactive.

      --
      If a job's not worth doing, it's not worth doing right.
  5. Re:What could be done? by Anonymous Coward · · Score: 3, Informative

    While I appreciate your support of nuclear energy, I'm going to ask you to educate yourself a bit. There are ZERO reactors that use tritium. It is an unavoidable by-product of fission. http://en.wikipedia.org/wiki/Tritium

  6. Re:Superpowers by biryokumaru · · Score: 5, Funny
    1. Harvest the tritium
    2. Sell it to people who want to make fusion
    3. Become extremely wealthy
    4. Pay everyone to pretend you've got superpowers
    --
    When you're afraid to download music illegally in your own home, then the terrorists have won!
  7. Re:Superpowers by Kell+Bengal · · Score: 3, Funny

    I'm intrigued by your idea and would like to subscribe to your newsletter.

    --
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    altslashdot.org: The future of slashdot.
  8. Re:What could be done? by geekmux · · Score: 4, Insightful

    Build new nuclear reactors, specifically of the design that, either, doesn't use tritium or is melt down proof. Why are the same people that bitch about the safety of nuclear reactors all at once the people whole also hold it back from being a, somewhat, excellent energy source? Uncool green peace, uncool.

    Exactly. We should be embracing the technology and improving it with newer installations and better designs. But instead, I'm sure we'll hear from every anti-group in the world about how this leak is the sign of the apocalypse or some nonsense.

    We seem to have done a pretty damn good job with the automobile over the last 50 years of improvements. Why we can't seem to do the same thing with this energy source is beyond me.

  9. Perspective by Grond · · Score: 5, Informative

    The linked article says that the tritium levels are only half what must be reported to the Nuclear Regulatory Commission. And let's think about what 17,000 parts per liter is. A liter of water contains 3.34192092 * 1025 molecules. So those 17,000 atoms mean that, assuming one tritum atom per molecule, 0.00000000000000000005% of the water is contaminated with tritium. At 3.3ppb the concentration of uranium in seawater is several orders of magnitude higher. This is not to say that the leak shouldn't be found and fixed, but the notion that this demonstrates that our nuclear power plants are unsafe is absurd.

    1. Re:Perspective by schmidt349 · · Score: 5, Funny

      IIf you're a homeopath that's worse, isn't it?

    2. Re:Perspective by the+eric+conspiracy · · Score: 5, Informative

      Unfortunately the author of the article fudged the units (presumably he couldn't spell the name of the actual unit). The level of contamination is 17,000 picocuries per liter, not parts per liter.

      It is still a low level, and is less than the EPA standard for drinking water. But not as low as your calculation.

    3. Re:Perspective by wizardforce · · Score: 4, Interesting

      1 Curie = 2*10^12 disintigrations/minute
      17,000 picocuries = ~~625 disintigrations/second
      This level of radiation would require .65 picograms of Tritium per liter of water. This water is just marginally more radioactive than brazil nuts.

      --
      Sigs are too short to say anything truly profound so read the above post instead.
  10. Re:Carbon taxes by Shatrat · · Score: 5, Insightful

    ...or you could bring the cost of nuclear down through cutting red tape for building new ones and funding research into more efficient ones and not punish the consumers who will be stuck with coal in the meantime.
    I guess that doesn't fatten the right purses though, does it?

    --
    09 F9 11 02 9D 74 E3 5B D8 41 56 C5 63 56 88 C0
  11. Re:Superpowers by biryokumaru · · Score: 3, Funny

    I get that a lot.

    --
    When you're afraid to download music illegally in your own home, then the terrorists have won!
  12. Self-inflicted by OverlordQ · · Score: 5, Insightful

    What, besides shutting down leaky old nuclear plants, could be done to better control release of tritium into the environment?"

    Well maybe if somebody, HINT HINT, would let us build new, safer, and more efficient ones, instead of having to rely on the older ones.

    --
    Your hair look like poop, Bob! - Wanker.
  13. Re:Carbon taxes by biryokumaru · · Score: 3, Funny

    The power.... of SCIENCE! *bum bum BUM*

    --
    When you're afraid to download music illegally in your own home, then the terrorists have won!
  14. Re:What could be done? by PsychoSlashDot · · Score: 5, Insightful

    Aside from cost, public opinion is the real factor holding back exactly what you describe. It's a total case of NIMBY. Not in my back yard. "Nobody" wants a nuclear anything anywhere near them. Nuclear bad. Radiation bad. Eeeeevil.

    So. All you need to do is convince everyone you meet to stop being afraid of nuclear energy. While you're at it, please do the same for fears of the boogeyman, terrorists, cloning, cancer, and people with different coloured skin.

    --
    "Oh no... he found the .sig setting."
  15. Re:Carbon taxes by lapsed · · Score: 3, Informative

    You can relax. Nothing gives him the right to decide anything that affects you -- I think it's just an opinion. It's probably based on the knowledge that burning coal leads to smog and greenhouse gas emissions. If the economic cost of these pollutants aren't reflected in the cost of their consumption, then we're using too much of them. It's an externality. It's not based on the relative purity of one or another way of generating power. It's based on the absolute cost of an economic activity.
    It's not immediately clear that nuclear power doesn't have its own externalities or that the externalities can be approximated for either alternative, but that doesn't really make what he's saying any more or less of an opinion.

  16. Re:What could be done? by biryokumaru · · Score: 3, Informative

    Well, apart from the already mentioned fact that tritium is a natural by-product of fission, most modern reactors (pressurized water reactors or boiling water reactors, yes, not even pebble bed) are "melt down proof." Chernobyl is a superb example of why even old American designs are very, very safe and the old Russian designs are very, very insane.

    It is extremely disheartening to see someone so clearly misinformed about such a very easily researched topic.

    --
    When you're afraid to download music illegally in your own home, then the terrorists have won!
  17. Re:Here's one solution... by hedwards · · Score: 3, Informative

    Precisely, the only problems with American plants is that they could be more efficient and are a pain to service. There's very little risk of any sort of danger to the public. They'll shut down automatically if for any reason the core loses power and the navy has been operating small reactors for decades without any incidents.

  18. Lame by jmorris42 · · Score: 5, Interesting

    Good grief, could this /. article possibly be more biased? Who the hell does Slashdot think it is, the MSM? I thought the Internet was supposed to be an improvement.

    Lets just agree with the idiots at Greenpeace.... on one condition, that if we agree the current plants are operating far beyond their original design life they agree with us that the solution is to replace them with modern safer reactors.

    --
    Democrat delenda est
    1. Re:Lame by Nimey · · Score: 5, Insightful

      kdawson's the posting editor. 'Nuff said.

      --
      Hail Eris, full of mischief...

      E pluribus sanguinem
  19. No, that won't do by Krishnoid · · Score: 5, Funny

    Careful! You need to use the correct product for this problem.

  20. Re:Helium by rockNme2349 · · Score: 3, Informative

    Helium-3 != Helium-4

    Helium-3 is a rare isotope of Helium on the earth. It has promise for an alternative nuclear fusion fuel as well as whatever else scientists like to do with rare isotopes.

    --
    Sewage Treatment Facilities - "Our duty is clear."
  21. Tritium is fairly common... by SatireWolf · · Score: 5, Informative

    Tritium is the common name for hydrogen-3 (3H), which is a radioactive isotope of hydrogen. Like ordinary hydrogen (1H or hydrogen-1, called protium) and deuterium (2H or hydrogen-2), tritium has a single proton in its nucleus. Unlike ordinary hydrogen, deuterium and tritium have neutrons in their nucleus. Deuterium has one neutron in its nucleus and is stable, while tritium's nucleus contains two neutrons and is unstable. Tritium decays spontaneously to helium-3 (3He) through ejection of a beta particle (essentially a high-energy electron). The half-life of tritium is about 12.32 years. Since the number of protons determines chemical bonding, tritium behaves like ordinary hydrogen and can replace ordinary hydrogen in water molecules. Thus, tritium readily cycles through the hydrologic and biologic components of the environment. Tritium has three times the mass of ordinary hydrogen due to the two extra neutrons. Because of this extra mass, water containing tritium evaporates at a slightly slower rate than water containing only hydrogen-1.

    The unit of measure of tritium in water is the tritium unit (TU). One tritium unit equals 1 tritium atom in 1018 hydrogen atoms. In SI units, one tritium unit is about 0.118 bequerels per liter (Bq/L), where the bequerel is one decay per second. In picocuries per liter, 1 TU is approximately 3.19 pCi/L. Tritium occurs in very small quantities naturally, being produced in the upper atmosphere by cosmic rays. Natural (pre-nuclear age) levels of tritium in precipitation are on the order of 1 to 5 TU. Nuclear-weapons testing during the 1950s and 1960s created relatively large amounts of tritium in the atmosphere that can be detected in ground water that was recharged during this period. Greatly elevated levels of tritium can be present in ground water contaminated with radioactive wastes.

    It hasn't been until recently that the detection of the very miniscule ammounts of Tritium leakage through several feet of rebar, concrete, steel, and lead have been detectible as the units of measure are so minute to be nearly indetectable. As such, they don't pose much of a threat to humans, or other creatures in general. The half-life of Tritium in the typicaly human is roughly ten days, and is of such a low yield of energy to be about as harmful as living in Colorado being bombarded with a multiple increase of Cosmic rays versus people who live closer to sea level. In fact, when measuring the radioactive levels of Tritium you will notice that the K+ ions in bananas are radioactive as well.

    Basically, all of this overreacting to 'radioactive' stuff should result in EVERYTHING being banned that's radioactive. If they were so concerned with such low level contamination, they should do away with Limestone rock on the walls of schools (radioactive), granite countertops (radioactive), bananas (radioactive), and all manner of other things that emit EM and positron/neutron radiation on such low levels.

    The irony of all the craziness over 'radioactivity' is that on average, people who work near nuclear reactors, or have 'any' exposure on an ongoing basis at a very low level are typically healthier than the crazy people scared of all this radiation floating around.

    If you take all the TLD (thermo-luminescent devices) worn by all Department of Energy employees and Nuclear Sub/Carrier personnel to measure very accurately the radiation exposure over a year, and add up every TLD in the DOE and Navy, it is still less radiation than 1 person receives by living in Denver Colorado for a year.

    Thus, by this non-sensical IT'S RADIOACTIVE IT MUST BE BAD FOR US logic, we should quarantine Colorado, because obviously it's going to end up becoming a mutated Zombieland where only those highly paranoid, and well adept at using all manner of sharp, blunt, and dangerous instruments for maiming Zombies will survive.

    1. Re:Tritium is fairly common... by radtea · · Score: 3, Informative

      The unit of measure of tritium in water is the tritium unit (TU). One tritium unit equals 1 tritium atom in 1018 hydrogen atoms.

      10^18?

      Also, it's polite to cite the sources you copy large blocks of text from

      --
      Blasphemy is a human right. Blasphemophobia kills.
  22. Re:Rose-colored perspective by jmorris42 · · Score: 3, Interesting

    > To the advocates of nuclear power, Chernobyl isn't a demonstration of the danger of nuclear power...

    I'm interested in hearing a contrary opinion, but really. It was a demonstration of something we all know, that if you try really hard to screw something up you usually succeed.

    Chernobyl was a poorly designed Russian reactor that would have never been issued a permit anywhere in the Western world but that wasn't why it failed. We still don't know all of the details of what they were researching but the assholes had intentionally turned off what safety features it did have. It is really hard to design something so idiot proof that it can withstand a determined effort by trained engineers to subvert the safety cutoffs.

    --
    Democrat delenda est
  23. I need to know how fast the sky is falling! by Quadraginta · · Score: 5, Insightful

    You've got to love the innumeracy of the reporter on this article:

    by Wednesday, the contamination had jumped to 17,000 parts per liter.

    Ah yes, parts per liter. One of those quaint old-fashioned units of concentration, I guess, like horsepower per cubit. I wish someone could remind me how we convert to a more familiar unit like grams per liter, moles per liter, parts per million.

  24. Re:Superpowers by ozmanjusri · · Score: 3, Funny

    Where's the Kaboom? There was supposed to be an earth shattering kaboom!

    --
    "I've got more toys than Teruhisa Kitahara."
  25. Re:What could be done? by cheesybagel · · Score: 5, Insightful

    Any nuclear fission reactor generates neutrons. If water is used in the reactor (e.g. for cooling), some of the hydrogen in the water will absorb neutrons and become deuterium or tritium. If the reactor uses heavy water (e.g. CANDU reactor, which is not the case here) tritium production is maximized, since you need to absorb less neutrons to produce the same amount of tritium. Tritium is a weak beta emitter, so it is only dangerous if you ingest it in sufficient amounts. It decays into stable Helium-3. Even natural water has some trace amounts of tritium in it. FWIW the maximum permissible level of Tritium in Canada is way, way larger than in the USA. Guess where the 'C' in CANDU comes from...

    FWIW Tritium is not the thing I am most concerned about in terms of nuclear waste. Iodine-131 or Strontium-90, now those are nasty.

  26. Pollution levels by dg41 · · Score: 3, Funny
    He said the pollution could increase, decrease or even disappear.

    Wow, awesome deduction there, Sherlock.

  27. Comment removed by account_deleted · · Score: 3, Informative

    Comment removed based on user account deletion

  28. Re:What could be done? by Dun+Malg · · Score: 5, Informative

    Of course the salient point about TMI is that even though it was a 98% meltdown (deformation of fuel rods due to excessive heat), the whole thing was 100% contained. The small amount of radiation leaked was because some genius after the fact thought it would be a good idea to vent the hydrogen bubble in the containment dome to the atmosphere, despite the fact that it contained Xenon-133 and Krypton-85.

    --
    If a job's not worth doing, it's not worth doing right.
  29. Re:Rose-colored perspective by ErkDemon · · Score: 3, Informative
    Well, I'd say that as a safety exercise designed to identify potential failure modes, the test was a resounding success.

    File under "OSPD" ("operation successful, patient died").

  30. Well run? by mdsolar · · Score: 4, Informative

    Is it well run if it is leaking radioactive waste into the ground water? http://en.wikipedia.org/wiki/Byron_Nuclear_Generating_Station#Groundwater_contamination Maybe that is part of their mission statement?